uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Energy release rate of propagating deformation bands and their hosted cracks
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
2014 (English)In: International Journal of Rock Mechanics And Mining Sciences, ISSN 1365-1609, Vol. 67, 184-190 p.Article in journal (Refereed) Published
Abstract [en]

Cataclastic bands and their mechanical properties within two mineralogically different sandstones have been studied. In order to investigate the propagation energy of these bands, we have used dynamic elastic moduli calculated from laboratory measurements of ultrasonic velocities using a portable ultrasonic measuring system. As a product of cataclasis and compaction, elastic moduli (uniaxial compressive and shear moduli) of the bands are different from their corresponding host rocks leading to heterogeneity and anisotropy within sandstone reservoirs. Poisson's ratio decreases in the cataclastic bands of sandstone with high quartz content as a result of compaction, while it increases within cataclastic bands of sandstone with high clay and phyllosilicate content (more than 30%). Using the calculated propagation energy rates, we investigate which mode of deformation can be more dominant in the setting of our samples, propagation of deformation band as a result of strain hardening within the cataclastic band or crack propagation inside the deformation band due to strain softening prior to the propagation of band. We further estimate the maximum length of cracks inside a deformation band which can precede further growth of the deformation band. (C) 2013 Elsevier Ltd. All rights reserved

Place, publisher, year, edition, pages
2014. Vol. 67, 184-190 p.
Keyword [en]
Cataclastic bands, Propagation energy, Elastic moduli, Cracks
National Category
Geophysics Earth and Related Environmental Sciences
URN: urn:nbn:se:uu:diva-225081DOI: 10.1016/j.ijrmms.2013.10.007ISI: 000334338400020OAI: oai:DiVA.org:uu-225081DiVA: diva2:724972
Available from: 2014-06-13 Created: 2014-05-27 Last updated: 2014-06-13Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Department of Earth Sciences
In the same journal
International Journal of Rock Mechanics And Mining Sciences
GeophysicsEarth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 182 hits
ReferencesLink to record
Permanent link

Direct link